<?php

function sum($num1,$num2){
	$sum =0;
	$sum = $num1+$num2;
	return $sum;
}


echo sum(10,5);


echo date_default_timezone_get();//获取时区

// echo date_default_timezone_set();//设置时区

$date = date('Y-m-d H:i:s');
echo $date;



